Introduction: Grasping the Historical Characteristics of East Asia and Central Eurasia!
When you start studying world history, you might feel overwhelmed by the sheer number of dynasty names and institutional terms, thinking, "There is just so much to memorize..." But don't worry! What the Common Test for University Admissions (in "Historical Inquiry and World History Inquiry") truly looks for is not mere rote memorization, but understanding the overarching mechanisms (historical characteristics)—that is, "Why did such forms of states and societies emerge in these specific regions?"
The main protagonists of this unit are East Asia (China proper and its periphery), which established massive empires centered on agriculture, and the nomads of Central Eurasia, who galloped across vast steppes and arid lands. Settled agriculturalists and mobile pastoral nomads—these two contrasting worlds clashed fiercely at times and intermingled deeply at others, forging unique orders and cultures. Let's explore these dynamic interactions together!
1. Natural Environments and the Two Worlds: Agrarian and Pastoral Societies
(1) The World of Settled Agriculture (East Asia)
In regions blessed with abundant water resources and fertile soils, such as the basins of the Yellow River and the Yangtze River, settled agriculture developed from early antiquity.
Because people in agrarian societies are tied to the land to cultivate crops, large-scale flood control, irrigation projects, and the administration of the peasantry were indispensable. Consequently, this environment naturally fostered powerful bureaucratic machineries and centralized states capable of unifying populations, collecting taxes, and maintaining public order.
(2) The World of Mobile Pastoral Nomadism (Central Eurasia)
Meanwhile, in the grasslands, steppes, and semi-deserts of Central Eurasia sprawling to the north and west of East Asia, low precipitation made farming unsuitable. People sustained their livelihood through pastoral nomadism, raising horses, sheep, camels, and other livestock while moving seasonally in search of water and pasture.
Through their daily routines, nomads developed superb mounted archery skills, forming militarily formidable forces. Grounded in fierce tribal solidarity, they forged nomadic states (empires) rallied under powerful chieftains.
(3) The Interaction Between the Two Worlds
Agrarian and nomadic peoples were not merely perpetual adversaries. Nomads needed to obtain daily necessities such as grain, tea, and silk textiles from farmers, while farmers desperately needed to procure warhorses—an absolute military necessity—from the nomads. The two worlds aided each other through trade (frontier markets / mutual trade); when agreements could not be reached, tensions escalated into plundering raids and military invasions. The Great Wall built by successive Chinese dynasties was quite literally the dividing line between "farming" and "nomadism."
[Key Takeaway]
The ultimate key to understanding East Asian and Central Eurasian history is the dynamic relationship of coexistence and tension between the "settled world of agrarian farmers" and the "mobile world of nomads." Looking at the relationship from both perspectives rather than just one is essential for scoring high on the Common Test!
2. Imperial Formation and Governing Mechanisms in Qin and Han
(1) Qin's Unification and Rule by Law
Emerging from the chaos of the Spring and Autumn and Warring States periods, the Qin dynasty unified China for the first time in the 3rd century BCE.
To govern the entire realm under a unified command, Qin implemented the commandery-county system (junxian system) nationwide, dispatching civil officials (bureaucrats) from the central government to local administrative units. Furthermore, Qin standardized the script, weights and measures, currency, and axle widths of carts, enforcing centralized rule through strict legalism. Additionally, connecting and fortifying the Great Wall to counter northern nomadic powers was a crucial development.
(2) Han Governance and the Official Adoption of Confucianism
Although Qin's abrupt reforms and severe rule led to its rapid collapse, the succeeding Han dynasty (Former Han and Later Han) inherited Qin's basic institutions while adopting a more pragmatic governing strategy.
Initially, the Han instituted the commandery-fief system (junquo system), which combined direct rule via the commandery-county system in central regions with enfeoffing imperial kin and meritorious generals with hereditary fiefs. Gradually, however, the Han eroded the power of these feudal lords and shifted back to an effective nationwide commandery-county system.
Another milestone during the Han era was the designation of Confucianism as the official state ideology. By adopting Confucianism—which emphasized filial piety, familial order, and moral propriety (ritual courtesy)—as the state-sanctioned doctrine and standard for official recruitment, Han established a foundational social norm that governed East Asian civilization for millennia.
(3) Confrontation Between the Qin/Han Empires and Northern Nomadic States
During the Han period, a mighty nomadic empire (the Xiongnu) dominated the northern Mongolian Plateau, exerting tremendous pressure on the Han. The Han initially pursued a policy of appeasement (heqin), maintaining peace through lavish tribute gifts. However, during the reign of Emperor Wu (Han Wudi), the Han switched to military counteroffensives and dispatched envoys to the Western Regions (Central Asia) to secure east-west commercial arteries (the Silk Road).
Thus, the foreign policy of Chinese dynasties was constantly and profoundly shaped by the balance of power with Central Eurasian nomadic forces.
[Trivia / Fun Fact]
When Emperor Wu of Han dispatched Zhang Qian to the Western Regions, his primary goal was to find a military ally (the Yuezhi) against the northern nomadic state of Xiongnu. Although the formal alliance never materialized, Zhang Qian's journey provided vital intelligence regarding Central Asia and paved the way for opening up the trans-Eurasian trade routes!
[Common Pitfall]
Be careful not to confuse the "commandery-county system" with the "commandery-fief system"!
- Commandery-County System (Junxian): The empire is divided into commanderies and counties, governed directly by bureaucratic officials appointed by the central court (thorough centralization).
- Commandery-Fief System (Junquo): A hybrid system where directly controlled territories use the commandery-county system, while other territories are granted to regional kings/feudal lords.
Remember: Han started with the hybrid "commandery-fief system" and gradually transitioned into the centralized "commandery-county system."
3. Characteristics of Nomadic States
(1) Strengths and Political Structure of Nomadic Empires
The nomadic states created by Central Eurasian pastoralists had fundamentally different characteristics from settled agrarian states.
In peacetime, nomads moved across the steppes following their herds; in wartime, the entire adult male population instantly transformed into a lethal cavalry force. Their unmatched mobility and mounted archery overwhelmingly outperformed agrarian infantry armies.
The monarch (bearing titles such as Qaghan or Chanyu) stood at the pinnacle of the tribal confederation. However, his authority was not despotic like that of an agrarian emperor; it depended heavily on councils with powerful tribal chieftains and continued military successes (the distribution of plundered booty and prestige goods).
(2) Central Eurasia as the Facilitator of Trans-Continental Trade
While nomadic empires are often mistakenly stereotyped as "barbaric invaders," they were actually vital protectors and sponsors of Eurasia-wide East-West trade. Collaborating with merchants from oasis city-states (such as the Sogdians), they escorted caravans along the Silk Road, levied transit tolls, and actively engaged in international commercial enterprises.
[Key Takeaway]
Nomadic states were far more than "horse warriors." They served as indispensable hubs that linked vast inland Eurasian networks and facilitated the flow of goods, technologies, and ideas between the East and the West.
4. The Tang Dynasty and Neighboring States: Formation of the East Asian Cultural Sphere
(1) Tang's Cosmopolitan Character and State Institutions
Founded in the 7th century, the Tang dynasty was a remarkably cosmopolitan empire that blended elements from northern nomadic-descended military elites with the institutional traditions of classical Chinese civilization.
The Tang codified the ritsuryo (lüling) system as its fundamental legal framework:
- Ritsu (Lü): Penal codes and criminal sanctions (equivalent to modern penal/criminal law).
- Ryo (Ling): Administrative regulations, civil statuses, and fiscal codes (equivalent to administrative and civil law).
At the imperial center, Tang operated administrative organs such as the Three Departments and Six Ministries, and systematically implemented land allocation, taxation, and military service (the Equal-Field system, Zuyongdiao tax system, and Fubing militia system).
(2) The Tang-Centered International Order (Tributary-Investiture System)
Backed by supreme military might and sophisticated institutions, the Tang maintained diplomatic ties with neighboring nations through the tribute and investiture system.
When foreign rulers dispatched diplomatic missions to present local tribute to the Tang emperor (tribute), the emperor bestowed lavish gifts in return and granted imperial titles acknowledging their legitimacy as local rulers (investiture). This created a formal international hierarchy headed by the Tang emperor while respecting the practical internal autonomy of each state.
(3) Cultural Diffusion and the East Asian Cultural Sphere
Tang institutions and culture were enthusiastically embraced by neighboring regions such as the Korean Peninsula (e.g., Silla), Japan, and Vietnam.
This widespread adoption gave rise to the East Asian Cultural Sphere, which shared four foundational components:
1. Chinese Characters (Kanji / Hanzi): A shared script for diplomatic correspondence, administrative records, and literary expression.
2. Confucianism: The common foundation for social order, morality, and political philosophy.
3. Buddhism: The universal religion that protected the state and nurtured spiritual life.
4. Ritsuryo Codes (Lüling): A systematic body of statecraft and legal governance.
(4) Parallels and Interactions with Ancient Japan
During the Tang period, Japan dispatched Kentoshi (Japanese missions to Tang China) to absorb the latest political systems, Buddhist doctrines, and artistic trends firsthand.
Landmark events in early Japan—such as the Taika Reforms and the promulgation of the Taiho Ritsuryo Code—were directly linked to Japan's integration into this East Asian regional order and its adoption of Tang institutions.
However, Japan did not copy the Tang model blindly. For instance, the imperial civil service examinations (Keju) were never fully functional in Japan; instead, hereditary aristocratic lineages remained dominant. This perspective—"adopting a universal regional model while actively adapting it to fit indigenous social realities"—is a central analytical framework for Historical Inquiry.
[Trivia / Fun Fact]
Chang'an, the imperial capital of the Tang dynasty, was a majestic planned city arranged in a strict grid layout, boasting a population of over one million people—making it the largest metropolis in the world at the time! Japan's ancient capitals, Heijo-kyo (Nara) and Heian-kyo (Kyoto), were famously modeled after Chang'an's urban layout.
[Common Pitfall]
"Tribute" and "Investiture" are often mentioned in the same breath, but they represent distinct diplomatic actions:
- Tribute (Chaogong): A neighboring state bringing diplomatic missions and gifts to the Chinese emperor (often possessing significant economic benefits through reciprocal trade).
- Investiture (Cefeng): The Chinese emperor officially bestowing political titles or noble ranks onto foreign rulers, establishing a nominal suzerain-vassal relationship.
For example, Japan conducted tributary trade with Tang China via the Kentoshi missions, but it chose not to receive investiture during this period, guarding its autonomous imperial standing. Keep in mind this flexibility between ritual form and political reality!
5. Organizing "Historical Perspectives and Thinking" for the Common Test
Questions on the Common Test will ask you to analyze primary textual excerpts, thematic maps, and genealogical charts, challenging you to compare two regions or trace historical developments across time. Keep these three core lenses in mind:
1. Livelihood and Societal Organization: Why did agrarian societies produce bureaucratic, sedentary states, while pastoralists formed mobile tribal confederations?
2. Multifaceted Interactions: Look beyond warfare—pay close attention to commercial trade (such as silk-for-horse exchanges), cultural diffusion, and diplomatic envoys.
3. Transmission and Regional Adaptation: Compare how common elements like Tang legal codes, Confucianism, and Buddhism were customized by neighboring societies (such as Silla and Japan) to accommodate their own local traditions.
[Summary Points]
- The historical character of East Asia and Central Eurasia was forged through the dynamic coexistence and tension between "centralized agrarian empires (Qin, Han, Tang)" and "highly mobile nomadic confederations."
- The Qin and Han dynasties laid down the institutional prototypes of centralized rule and Confucian statecraft, while the Tang dynasty crystallized the "East Asian Cultural Sphere" through ritsuryo governance and an open, cosmopolitan culture.
- Neighboring regions, including Japan, actively shaped their own distinctive societies and states while continuously interacting with this grand Eurasian network.